Global analysis reveals climatic controls on the oxygen isotope composition of cave drip water

Global analysis reveals climatic controls on the oxygen isotope composition of cave drip water

The oxygen isotope composition of speleothems is a widely used proxy for past climate change. Robust use of this proxy depends on understanding the relationship between precipitation and cave drip water δ 18 O. Here, we present the first global analysis, based on data from 163 drip sites, from 39 ca...

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Veröffentlicht in:Nature communications 2019-07, Vol.10 (1), p.2984-7, Article 2984
Hauptverfasser: Baker, Andy, Hartmann, Andreas, Duan, Wuhui, Hankin, Stuart, Comas-Bru, Laia, Cuthbert, Mark O., Treble, Pauline C., Banner, Jay, Genty, Dominique, Baldini, Lisa M., Bartolomé, Miguel, Moreno, Ana, Pérez-Mejías, Carlos, Werner, Martin
Format: Artikel
Sprache:eng
Schlagworte:
704/106/242
704/106/413
Annual precipitation
Caves
Climate
Climate change
Environmental Sciences
Fractionation
Humanities and Social Sciences
Isotope composition
Isotopes
Karst
multidisciplinary
Oxygen
Oxygen isotopes
Precipitation
Recharge
Science
Science (multidisciplinary)
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Zusammenfassung:The oxygen isotope composition of speleothems is a widely used proxy for past climate change. Robust use of this proxy depends on understanding the relationship between precipitation and cave drip water δ 18 O. Here, we present the first global analysis, based on data from 163 drip sites, from 39 caves on five continents, showing that drip water δ 18 O is most similar to the amount-weighted precipitation δ 18 O where mean annual temperature (MAT) is  10 °C and 
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-019-11027-w